code

<?php 

  //  ______________________
  // /                      \
  // | WARNING:             |
  // | Here will be dragons |
  // \___  _________________/
  //     |/                                             
  //   (o_                                                 
  //   //\                                                 
  //   V_/_                                               
  // ================================
	
	class model_CRUD extends CI_model {
		public function Read() {
			$query = $this->db->get('Persons');
			return $query->result();;
		}

		public function Read_Person() {
			$this->db->select();
			$this->db->where('ID', $this->uri->segment(3));
			$Query = $this->db->get('Persons');
			return $Query->result();
		}

		public function InsertDB() {
			$Values = array(
					'Firstname' => $this->input->post('Firstname'),
					'Lastname' => $this->input->post('Lastname')
				);

			$this->db->insert('Persons', $Values);
		}

		public function UpdateDB() {
			$Values = array(
					'Firstname' => $this->input->post('Firstname'),
					'Lastname' => $this->input->post('Lastname')
				);

			$this->db->update('Persons', $Values);
			$this->db->where('ID', $this->uri->segment(3));

		}

		public function DeleteDB() {
			$this->db->where('ID', $this->uri->segment(3));
			$this->db->delete('Persons');
		}
	}

	// There were no dragons slayered bij writing this code.